This is not on my S, but my Tahoe.
So my wife is parallel parking and then she is half way in the spot and can't turn the steering wheel. My brother gets there before me and is able to force the wheels straight and back it into the spot. He thinks it is probably the power steering rack. The thing is that I didn't notice anything funny with the steering prior. Anyone have any thoughts of the problem? I check the fluids.. ok there.
Thanks